| | SETTING A SUB UP FOR STEREO |  |
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Mark E Smith
 Join date: 2009-10-07
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Posts: 1852
Location: blighty
| | Subject: SETTING A SUB UP FOR STEREO Tue Nov 17, 2009 1:52 am | |
| Bit of a mine field to me at the mo....do I just set the crossover for the lowest frequency or try to let the sub share the upper and mid base as well ??  |
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arthurk74
 Join date: 2009-09-19
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Posts: 763
Location: Sydney Aus
Age: 65
| | Subject: Re: SETTING A SUB UP FOR STEREO Tue Nov 17, 2009 4:17 am | |
| If you let it interfere too much with the midrange you may experience muddiness Mark.
Personally, I would rather have full range speakers do their job as designed.
The effects of a sub in a HIFI system should be very subtle IMHO.
That is, unless you're using LS3/5a or similar speakers. |
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Mark E Smith
Join date: 2009-10-07
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Posts: 1852
Location: blighty
| | Subject: Re: SETTING A SUB UP FOR STEREO Tue Nov 17, 2009 4:32 am | |
| Subtle is what I want Arthur....the room is 3 times the size of the one the speakers were intended for....
They have a sweet top and middle range but the lower 10th of the music just isn't there.....Hence the sub. |
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JSBach
Join date: 2009-10-10
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Posts: 1044
Location: Australia
| | Subject: Re: SETTING A SUB UP FOR STEREO Tue Nov 17, 2009 5:58 am | |
| | mark e smith wrote: | Subtle is what I want Arthur....the room is 3 times the size of the one the speakers were intended for....
They have a sweet top and middle range but the lower 10th of the music just isn't there.....Hence the sub. |
Difficult problem Mark. First off try positioning the sub in various locations and listen to the effect. When you find the position that gives the most even bass start trying out different cut off frequencies and also phase angle (if your sub has a phase adjustment facility) Without on board room analysis and compensation software getting a sub woofer to behave itself can be a long and difficult process.
With your speakers I'm guessing a crossover point between sub and main speakers would be best around the 70 to 90 Hz region but that's just a guess. It could be that there's also some mismatch between your new amp and your main speakers in the bass region. All this though is stabbing in the dark. |
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Mark E Smith
Join date: 2009-10-07
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Posts: 1852
Location: blighty
| | Subject: Re: SETTING A SUB UP FOR STEREO Tue Nov 17, 2009 11:13 pm | |
| phase angle ?? Yes it does have this.....please elaborate . If you need any tips on eurofighter laser systems...I'm yer man. Any more tips from you guys are welcome......thats not a slur to you JS ! I always heed your advice matey...  |
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Timbo
 Join date: 2009-09-04
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Posts: 429
| | Subject: Re: SETTING A SUB UP FOR STEREO Thu Nov 19, 2009 10:20 pm | |
| Phase is IIRC 0º or 180º which means either the sub is running in phase or running out of phase, so instead of pushing air it pulls air.
Also it is used to flip the electrical phase which it used if you have a phase problem at certain frequencies.
Common frequencies playing by two sources can lead to frequency reinforcement if in acoustically in phase or frequency cancellation if acoustically out of phase.
Phase can alter across the frequency range and can be affected by many factors.
Speakers and subwoofers can play common frequencies even with sharp slope high pass/low pass filters, so if there is cancellation (loss) in the bass frequency you flip the phase so the frequencies are reinforcing rather than cancelling.
In a different situation a pair of subwoofers playing common frequencies can cancel each other out to have almost no output bring them into acoustical phase and they will play together!
It is something you need to listen out for, when playing with the phase switch often the louder of the two settings is the best. |
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Mark E Smith
Join date: 2009-10-07
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Posts: 1852
Location: blighty
| | Subject: Re: SETTING A SUB UP FOR STEREO Thu Nov 19, 2009 10:31 pm | |
| Brilliant matey....cheers ..... |
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Joker
 Join date: 2009-09-07
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Posts: 1337
| | Subject: Re: SETTING A SUB UP FOR STEREO Thu Nov 19, 2009 11:17 pm | |
| Just have someone farting loudly in the corner of your room, it will sound just as good, in fact possibly a bit more tuneful, smell could be a minus point though  |
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Mark E Smith
Join date: 2009-10-07
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Posts: 1852
Location: blighty
| | Subject: Re: SETTING A SUB UP FOR STEREO Fri Nov 20, 2009 12:34 am | |
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| | SETTING A SUB UP FOR STEREO | |
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